Class DefaultHeader

impl/src/main/java/io/jsonwebtoken/impl/DefaultHeader.java:29–87

import java.util.Map;

public class DefaultHeader extends ParameterMap implements Header {

    static final Parameter<String> TYPE = Parameters.string(Header.TYPE, "Type");
    static final Parameter<String> CONTENT_TYPE = Parameters.builder(String.class)
            .setId(Header.CONTENT_TYPE).setName("Content Type")
            .setConverter(CompactMediaTypeIdConverter.INSTANCE).build();
    static final Parameter<String> ALGORITHM = Parameters.string(Header.ALGORITHM, "Algorithm");
    static final Parameter<String> COMPRESSION_ALGORITHM =
            Parameters.string(Header.COMPRESSION_ALGORITHM, "Compression Algorithm");
    @SuppressWarnings("DeprecatedIsStillUsed")
    @Deprecated // TODO: remove for 1.0.0:
    static final Parameter<String> DEPRECATED_COMPRESSION_ALGORITHM =
            Parameters.string(Header.DEPRECATED_COMPRESSION_ALGORITHM, "Deprecated Compression Algorithm");

    static final Registry<String, Parameter<?>> PARAMS =
            Parameters.registry(TYPE, CONTENT_TYPE, ALGORITHM, COMPRESSION_ALGORITHM, DEPRECATED_COMPRESSION_ALGORITHM);

    public DefaultHeader(Map<String, ?> values) {
        super(PARAMS, values);
    }

    protected DefaultHeader(Registry<String, Parameter<?>> registry, Map<String, ?> values) {
        super(registry, values);
    }

    @Override
    public String getName() {
        return "JWT header";
    }

    static String nameOf(Header header) {
        return Assert.hasText(Assert.isInstanceOf(Nameable.class, header).getName(),
                "Header name cannot be null or empty.");
    }

    @Override
    public String getType() {
        return get(TYPE);
    }

    @Override
    public String getContentType() {
        return get(CONTENT_TYPE);
    }

    @Override
    public String getAlgorithm() {
        return get(ALGORITHM);
    }

    @Override
    public String getCompressionAlgorithm() {
        String s = get(COMPRESSION_ALGORITHM);
        if (!Strings.hasText(s)) {
            s = get(DEPRECATED_COMPRESSION_ALGORITHM);
        }
        return s;
    }